5a-2a=21

Simple and best practice solution for 5a-2a=21 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 5a-2a=21 equation: 


Simplifying
5a + -2a = 21

Combine like terms: 5a + -2a = 3a
3a = 21

Solving
3a = 21

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Divide each side by '3'.
a = 7

Simplifying
a = 7

See similar equations:

| 6=8(s-34)-20 | | 24=-2(m+4)+18 | | .65+(17-10)x=14.55 | | r-5---1/6=10 | | 3(8x+2)=18x | | (9x-6)(3x+6)=y | | f+(17-10)x=14.55 | | 5(3n+10)+3(18-4n)=161 | | 19p+14q+p-6q-3p= | | 9+12=2x-2 | | 9x-12=2x-2 | | 2(10x-20)=2(5x-40) | | 5m-6=66-3m | | 8+2x+2x+10y+40y+10xy=100 | | 9x+12=2x+2 | | 7+2l=24 | | 9x+12=2-2 | | -19-2x=-7 | | 2.5+2l=24 | | 2.25+2l=24 | | 3x-3.8=2.4 | | 12=4a+2b | | 3z+z+70=180 | | 15x+3-2(x-1)=(7-x)(7+x) | | 4/1*-4/3 | | 4x^2-5=59 | | 7(x+2)=3x+7 | | -1/2-5/6 | | -46-12x=-8x+14 | | 4+2x=5(x-3)+x^2+9 | | 5.5x+18=6.75x+13 | | 4(4s+8)=96 |

Equations solver categories